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Senior Notes Aggregate Maturities (Details) - Senior Notes [Member] - USD ($)	Dec. 31, 2021	May 13, 2021	Dec. 31, 2020
Principal Maturity
2022	$ 0
2023	0
2024	0
2025	0
2026	0
Thereafter	400,000,000
Principal Maturity	400,000,000	$ 400,000,000
Discount Amortization
2020	(493,000)
2021	(515,000)
2022	(539,000)
2023	(563,000)
2024	(588,000)
Thereafter	(1,501,000)
Discount Amortization	(4,199,000)		$ (3,582,000)
Carrying Value
2020	(493,000)
2021	(515,000)
2022	(539,000)
2023	(563,000)
2024	(588,000)
Thereafter	398,499,000
Carrying Value	$ 395,801,000

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